1. Hirudin as an inhibitor of thrombin;Markwardt,1970
2. Pharmacologic control of blood coagulation by synthetic, low molecular weight inhibitors of clotting enzymes;Markwardt,1981
3. Cyclic amides of Nα-Arylsulfonylamino acylated 4-amidinophenylalanine - tight binding inhibitors of thrombin;StÜrzebecher;Thromb. Res.,1983
4. Pharmacological studies on the antithrombotic action of hirudin in experimental animals;Markwardt;Thrombos. Haemost.,1982
5. Pharmacokinetics and anticoagulant effect of hirudin in man;Markwardt;Thrombos. Haemost.,1984